Edward p



Feb. 19, 1929.

E.` P. BAIRD LOCK Filed Aug. 51, 1923 Z lll-7//////////// `elevation oitA the locking' device; and Fie'. l

Patented Feb. 19, 1929.

UNHTEB .SATES PATENT OFFICE.

EDWARD P. BARD, F EVANSTON, ILLINOIS, ASSG'NOR TO IBAR-D LOCK CO., OF CHICAGO, ILINOIS, A CORPORATION OF ILLINOIS.

LOCK.

Application filed August 31, 1923.

This invention relates to improvements in locks and its purpose is to provide an improved device which *annot be readily picked or released by unauthorized persons. The invention relates particularly to a lock comprising a plmfality of tumblers which are :ulffipted to be aligned with each other by a key to release the movable part ot the lock and which automatically assume positions, when the key is withdrawn, whereby the unautlioriiafd picking or releasing` ot the movable part of the lock in eleetively prevented. A further object of the invention is to provide a. lock comprisingtwo sets of 'tumblers, those in one set being' adapted to move in one diret'- tion when the key is withdrawn while those in the other set move in another direction. A 'further feature is the )revision ot' a plurality oi series o't' tninblers adapted to move in different directions and capable of being aligned by a single key to release Vthe movable part ot the lock. A further feature oli the invention is the provision ot a lock oit the barrel and cylinder type comprising' tumblers which are moved into engagement with notches in the barrel by means ot springs when the key is withdrawn. Other objects relate to various features of construction and arrangement of the locking' device which will appear .more clearly hereinafter.

The nature oli the invention will be understood 'from the following specification taken with the accompanying drawings in which one embodiment is illustrated.

lin the drawii Fig. l shows a longitudinal vertical sectifrin through a lock einbfulyiiur the 'invention` a. key beine' shown in position lo release the tu ers; 2 shows a transverse .'erliral s-:ef'tdin ou the. line ot Figi'. l l" Il shows a longitudinal section ou the line il 3 ot Fie'. l; Fig'. 4l Shows a tr isverse vertical Section on the line el-el ot lire: l g Fig'. 5 shows a sectional View similar to Fie'. il. with the key withdrawn; Fig. G shows a rear end shows a 'liront end elevation et the barrel and cylinder.

is illustrated in the drawings the invention comprises a cylindrical barrel l() which is adapted lto be rigidly seemed against longitudinal or transverse movement in the .trame et the lock or in the casing to which the lock is attached. This barrel is provided with an interna-l cylindrical bore ll. terminating' at its forward end at the internal annular shoulder Serial No. 660,309.

12 which is formed at the end of the enlarged bore 13. This barrel 'terms ay support for the movable. lock cylinder lei comprising two complementary members l5, each ot' which is semi-circular in cross-section as shown particularly in Fin'. T, these. mei'nbers being placed together with their flat sides in contact and being' united by a cap or collar lo. The members l5 are provided with semi-circular shoulders lT auljarent their ends, forming' together a complete annular shoulder or projection over a portion oil" which the cap 16 is adapted to pass. The cap has an annular liange 1G:L al: its outer end which engages the outer edge of the shoulder lT and at its other end the collar is swag'ed or inturned into an annular lroove i8 which is `termed adjacent the shoulders 17. The cap 1G is adapted to fit and revolve iu the bore ll while the members l5 o'i the cylinder are adapted to revolve in the bore lll. Al' their inner ends,y the. complementary members l5 ot the barrel are united by an end plate 20 which is of a diameter adapted to lit the enlarged counter bore 2l ol the barrel lll. The plate Q0 is provided with apertures which are engaged by two longitudinally extending lugs 23 termed integrally with they members l5 and the ends of these lugs are riveted to secure the plate in place on the cylinder. A pin 24 is eccentrieally mounted on the plate 2O and is adapted to engage and operate the lockinfr bolt` or the like, when the cylinder 'lil rotated, the angular 'movement oi the ryliud er being limited by the lug on the barrel engaging; the end walls ot' the notch 2G in the plate 2li).

lel'ore beine' assembled in the manner above described. the complementary members l5 oll he cylinder are provided on their llat sidef-s with registering' `e'rooves which together Atorni the key slot extending longitudinally eoiuplelelj.' tarough the cylinder. This key slot is substantially rectangular in cross-seetion but is j )rovided ou one side with a groove. 2f) oi"I rectangular cross-section extending' laterally 'trom the slot tln'ouglumt its length, and on the other side a V-shaped projection il() extends la "orally into the key .slotI throughout its length. 'lhe key 31 is provided with a flat blade 3Q. adapted to lit closely the slot 2S and is provided on one side with a rib t?) :nlapted to fil` the lgroove 23 and on the other side with a V-sbaped groove 3l adapted to receive the V-shaped projection 30. In addition to these features, the complementary members l5 of the cylinder are provided with a series of transverse grooves, extending yertically, as shown in F 1g. l, and torining` reetangular tuinbler slots as illustrated particularly in Fig'. 3. These slots extend cernpletely through the cylinder le and are adapted to be occupied by movable tuniblere which are capable olf being aligned with each other by the key 3l. ln the embodiment lluetrated, there are live tumbler slots end each oLt these except the iniddle one, s occupied by a pair oi tuinblere 36 havin 'th` `torni illustrated particularry in ltige. l and 2. 'llieee tuinblers have eur v d extremities which ere adapted to torni rgfuitinuations of the peripheral eurtace et' the cylinder when they are ah ied with each other by the key, and they are provided with rectangular' elote or openin 3T adapted to receive the key. These elote or openings 87 are of different diineneione in the different tuniblere, as shown par: ticularly in Fig. l and are adapted to be engaged by the verioue projections 3S and depreeeione 39 which are itorrned i1. the upper and lower edges ot the key se that when the key is placed in the key slot 28 the tuinblers align with each other as shown in Fig. l and periniit the rotation ot the cylinder le in the barrel l0. lV hen the key is Withdrawn these tuinblere 36 are adapted to by gravity into one ot' the longitudinal grooyee Il() Which are formed in the inner Wall ot the barrel l0 on the upper andlower Sides ot the cylinder. lVhen the tumblers thus engage theee grooves7 the rotation ol' the cylinder ie prevented by the engagenient of the exreniities otithe tumblers with the late 'al Sides oit the grooves.

For the purpose of more elteetually oy-rcoming; the possibility et aligning` the tuinblers in the cylinder Without the use oi? a key ot 'the proper configuration, an additional pair or' tunibh-ire` or latch nienibere 4515 are iuoun ted in the iniddle tumbler elet 235. rlfhese intermediate tlunblere @l5 have the torni shown particularly in Figc. 3, el. and 5, where it will be ,seen that meh tumbler comprises a body portion #i6 having torizied therein a subetantially reetangular key alot el" adapted to be closely itted transversely by the key blade Each key elet t7 is ynfoyided on one eide with a lf-shaped notch t8 and on the other side With a curved notch 49 tor a purpose to be hereinafter described. Each tumbler is further provided on one eide Ywith a projecting arni 50 and on the other l eine with aprojecting arin 5l, the 5l on one tumbler e5 being arranged on the saine eide ot the key slot as the a in 5() oi? the other tumbler 45. These proyectar aruis 50 uid 5l are adapted to extend in@ t which extend laterally trein tl e iii'terinediate tiunbler slot through the Walle t' t plenientary cylinderlnenibers 15.

tures are counterbored as .shown at 5f 'to Weense it 'the barrel l0 "hue preyei i he barre Supplea tuniblera 3G.

dedwith an when the key is vor blade e ang ula r er. treinitr L into theveyl ie aulanted to ei lll( poiti'iis ot the key elots el? in L L Mi 'i pr" r rml-n lenti, L ne wenn in ifi. o. its the ke is oie inwardly the rib on one sid will enegasre the l! the tnniblere` l5 and erully in one direction Lg.

its spring oil While the tlat s' oppofite the rib 38, will engage t notch Lit) in the other tuinbler Ll5 sind that tuinbler laterally in the other dire inst its Spring; until the two tui upy positions wherein the key s .agie ier with each other end wherein the arme E() will have been Withdrawn entirely ie notches rlfhe blade 32 et the ke ien be completely inserted i OCL to tl er alignment ot the tini'iblers 36 so the" t cylinder lcan be turned in trie barrel operate the locking bolt.

From the foregoing; deeer'otion it will be ap arent that in order to eitfect the proper registry of the tuinblers a key inuet be einployed which exactly lite the keye1 in a lateral direction and which also hab4 the proper i teril Surface? to operate tunibiere` bw f'oinentn ti tl e notch and unil' i aa these t fill. l Led byepro vhi l y l erally Yh-ib th proj the notches 5l', it will oe eeen that these tninblers cannot be related by any slight 'vibrato-ry inoreinet l' Y f l t ated tuinblers that they positively en when the l'ey ie Wil l5 more in a direction at i We L incieaeee toe dit-leur y L igninent oit all ot the t l ie une ot a pmperijr tortue@ eversely ine-ying; tuinblere lo alone in any desired nuinber or 5 'th any desired 't proper e one time wither-t 'tl LLL;

key. Th( u:

in a y fornis ot the other tuinbler slots. inay be used in each transversely moving tunibiers located @ne or niore tuinbers tumbler slot and the tumblers may be located in any selected slot or slots.

Although one form of the invention has been shown and described ttor purposes oi illustration, it will be understood that it may be constructed in various other forms vvithout departing 'from the scope of the appended claims.

I claim:

l. The combination in a lock ot' a member having a key slot and tumbler slots, and a pair of laterally movable and oppositely 'd able springy actuated means located in one said tumbler slots and adapted to be released by the insertion et a key in said key slot, tor normally preventiim' the operation ot said lock,

The combination in a lock o'l a member having' a key slot and other slots, a vertically movable latching' member in some of said other slots extendingv 'transversely to said key slot and operating' normally to prevent the movement ot said lirst-named member, and a pair ot laterally movable and oppositely slidable latching' members in anotherio't said other slots extending transversely to said key slot and transversely to said tirstnamed latching member' tor normally preventing the movement ot said lirst-named member.

8, il lock of the class described having in combination, an actuating member provided with diametrically opposed slots, tumblers mounted in one of said slots and having outwardly projecting; arms mounted .in diametrically opposed slot, springs in said latter slots engaging' the tumblers for moving' and holding' the same laterally in opposite directions, and a stationary member having' a recess adapted to be engaged by said tumblers.

-l-. The combination in a lock ot a `gravity actuated tumbler in a tumbler slot, laterally movable and oppositely slidable spring' actuated tumble 's in another tumbler slot movable at right andes to the direction ot movemeul ot said gravity actuated tumbler, and a key l'or operatingA all said tumblers iiulependentlv ot each other,

5.l YThe combination in a lock ot a rotatable member having.' a key slot, a set of tumblers mounted in said member and having' slots adapted to register with said key slot, a stationary member having a recess adapted to be engaged by said tumblers when the key 'is withdrawn from the slot, a second. set of lumblers movable transversely to said first named tumblers and having slots to be enn'fio'ed by said key, said stationary member n ne' notches to be engaged by said last men 'oued tumblers, and means for moving said second set ot tumblers laterally in opposite directions when said key is removed.

(l, The combination in a lock oit' a rotatable cylinder having a key slot and a plurality of tumbler slots intersecting said key slot, a set olf tumblers mounted in some of said tumbler slots and having;Y parts adapted to bc cn- ;ayd by a key 'nserted in said key slot, a barrel having; recesses adapted 'to be engaged by s: id iuniblers when said key is withdrawn, a second set ot tumblers independently mounted in another ol said tumbler slots and baviuig' parts adapted to be engaged by said key, said barrel ha ving' notches adapted to be eng; red by said last named tumblers when said key vis Withdrawn, and springs mounted in the slots and engaging' said second set of tumbler-s 'For moviiuij the latter laterally in opposite directions when said key is removed.

T. ',lhe combination in a lock o't a rotatable cylinder having' a key slot and a plurality olr lmubler slots intersectiim` said key slot. a sel ot lumblers mounted in some of said tumbler slots and having); parts adapted to be engaged by a k .y inserted in said key slot. a barrel having' a recess adapted to be eneeficd by said tumblers ivhen said key is vvididrau'n, and a second set ot tumblers separately mounted in another of said tumbler slots and having' parts adapted to be en'- n'an'ed by said key, said cylinder having' apertures comn'iunicating' with the other of said tumbler slots occupied by said second-named tumblers, said scconlfl-nained tumblers having' arms (ir-:tendine` into said apertures, springs encircling; said arms lor moving the second named tumblers laterally in opposite directions with respect to each other, said barrel having' notches adapted to be engaged by the extreinities oit said arms when said key is witlid 'aufn from paid slot.

8. 'lhe combination in a lock of a rotatable cylimler having` a key slot and a plurality of tumbler slots intersectingi said key slot, a set of tumblers mounted in some of said tumbl u' slots and having parts adapted to be engaged by a key inserted in said key slot, a barrel having a recess adapted to be engaged by said lumblersv when said key is withdrawn, a second lset ol tumbler-s mounted in a slot intermediate said iii':1t-nained tumbler slots and having parts adapted to be engaged by said key said cylinder having; a pertures communicating' with the other oi said tumbler' slots occupied by said second-named lumblers, said second-named tumblers having arms extending into said apertures, said barrel having' notches adapted to be engaged by the extremities ot said arms when said key is Withdrawn vfrom said slot, and springs for moving' laterally and in opposite directions said second-named tumblers on withdrawal ol said key.

9. The conibination in a lock ot a rotatable cylinder havinij` a key slot and a plurality ot tumbler slots intersecting` said key slot, a set of tumblers mounted in some oi said tumbler slots and having parts adapted to be engaged by the edge o't a key inserted in said lkey slot, a barrel having a recess adapted to be engaged loo llll

by Said tumbler?J when said key Witlull @Wma n reeel-sing .L a Second sei ef tumblere meunleil in the etA er blere meuzh litem-'id 'tumbler slots mal having pulls ad@ J upekftmies 'ii-ll ed to be engaged by the flut su v will l '1 with seid leY seid eylndel' having upel'mes emllluifmemmld apertul'ee Y l fli'llelent QOL mme :m'lil t and a lic-y lm netclflee "ce elec e fe *el himmel@ ing with @Tiller el sel@ humble? ele/irs me, by said. seeoml-niuned 'Umblere7 mid sea; named tumblels hm' arme ema l' Said zll3e1-xiu'es, said. barrel llmt'n adapted "no be engaged bj alle e )p1 lapteil to el f Ht el Sam mms v. len al Ley le n 1MM, meh im Smallieb/eleti and. siem mgwmm l move will Secund-11m. `mobi-ere elm :md in opnoe'te cllestene se :la le arms inte said notches.

10. The cfunl'lnulen in :a leel; a @Vlinder mount-eil te relate in said ey luder being; lnfevidul u''h 0f 'tumbler .sloth-a uml :1 key Slet l mld tuuiabler slots, :l se es 'umzle in some of :laid tumbler slm; l tures therethrough adepte@ said, key slot, :1. key lkw' t operate Seid tumblms by eng' l Walls of said aperture Suid ne'lcllee adapted to be e ble ,'fs when said ley is; w1

oli' laterally ll'lovable zum oppas? able tumbler/S mounted, in will ble' slete and having upertm'ee a regster Wltl'] said lieb' ed iramsveieely by :5am tending te move Sad Secund, transvelely te the dire/lieu e of seid l'rst namedfumble ing notches edaptell 'to e lith 1 mm' lil, 'lflle e( mbmtnn member han' bel,

Saul SeCOncl-nun'xecl tumbiel, en Saul lieV l'omrmlglmmhlers 11M l epeumu m sani 1s Wr-Lhfllfawn 'from vaud key s el. l' M Viel/lame Ineens tene le move ll. The combination in a leek oli/u wir. member having L tmubl sle'z and u lffy mlm-seeking ml tumbler slet, al pau' o f und Self. zu

blels mounted m said tun 'elel slet l1 adapted le be eng; apertures :ulapled te regirn with Seial eral Wells el" l slut, means tending le nuwe :l umlllelffs having parte :Lf Uted, te L n? mill key to el'lect the regg "l apel'im'es will. slot nml lim said lev slet. l'egstrj Of .L5

l2. 'll'le communion in :L lm member lum.' 1;; u` lumblel slet me 

